<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8" />
   
  <meta name="keywords" content="Java Python" />
   
  <meta name="description" content="From Zero to Hero" />
  
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
  <title>
    Docker-09-网络原理 |  朱酱酱的学习博客
  </title>
  <meta name="generator" content="hexo-theme-yilia-plus">
  
  <link rel="shortcut icon" href="/favicon.ico" />
  
  
<link rel="stylesheet" href="/css/style.css">

  
<script src="/js/pace.min.js"></script>


  

  

<link rel="alternate" href="/atom.xml" title="朱酱酱的学习博客" type="application/atom+xml">
</head>

</html>

<body>
  <div id="app">
    <main class="content">
      <section class="outer">
  <article id="post-Docker/Docker-09-网络原理" class="article article-type-post" itemscope
  itemprop="blogPost" data-scroll-reveal>

  <div class="article-inner">
    
    <header class="article-header">
       
<h1 class="article-title sea-center" style="border-left:0" itemprop="name">
  Docker-09-网络原理
</h1>
  

    </header>
    

    
    <div class="article-meta">
      <a href="/2020/06/03/Docker/Docker-09-%E7%BD%91%E7%BB%9C%E5%8E%9F%E7%90%86/" class="article-date">
  <time datetime="2020-06-03T06:44:24.000Z" itemprop="datePublished">2020-06-03</time>
</a>
      
      
      
<div class="word_count">
    <span class="post-time">
        <span class="post-meta-item-icon">
            <i class="ri-quill-pen-line"></i>
            <span class="post-meta-item-text"> 字数统计:</span>
            <span class="post-count">2.1k字</span>
        </span>
    </span>

    <span class="post-time">
        &nbsp; | &nbsp;
        <span class="post-meta-item-icon">
            <i class="ri-book-open-line"></i>
            <span class="post-meta-item-text"> 阅读时长≈</span>
            <span class="post-count">9分钟</span>
        </span>
    </span>
</div>

      
    </div>
    

    
    
    <div class="tocbot"></div>





    

    <div class="article-entry" itemprop="articleBody">
      


      

      
      <h1 id="Docker-09-网络原理"><a href="#Docker-09-网络原理" class="headerlink" title="Docker-09-网络原理"></a>Docker-09-网络原理</h1><h2 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h2><p>当你开始大规模使用Docker时，你会发现需要了解很多关于网络的知识。Docker作为目前最火的轻量级容器技术，有很多令人称道的功能，如Docker的镜像管理。然而，Docker同样有着很多不完善的地方，网络方面就是Docker比较薄弱的部分。因此，我们有必要深入了解Docker的网络知识，以满足更高的网络需求。本文首先介绍了Docker自身的4种网络工作方式，然后介绍一些自定义网络模式。</p>
<a id="more"></a>





<h2 id="1-理解-Docker-0"><a href="#1-理解-Docker-0" class="headerlink" title="1. 理解 Docker 0"></a>1. 理解 Docker 0</h2><ul>
<li>首先通过<code>ip addr</code> 查看ip环境</li>
</ul>
<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200603/221802079.png" alt="mark"></p>
<p>可以明显的看到网络有三个地址。</p>
<p><strong>我们每启动一个docker 容器，docker就会给docker容器分配一个ip ，我们只要安装了docker ，就会有一个docker网卡<code>docker0</code></strong></p>
<ul>
<li><p><strong>使用的技术是evth-pair技术！（桥接模式）</strong></p>
<ul>
<li>在主机上创建一对虚拟网卡veth pair设备。veth设备总是成对出现的，它们组成了一个数据的通道，数据从一个设备进入，就会从另一个设备出来。因此，veth设备常用来连接两个网络设备</li>
</ul>
</li>
<li><p>Docker将veth pair设备的一端放在新创建的容器中，并命名为eth0。另一端放在主机中，以veth65f9这样类似的名字命名，并将这个网络设备加入到docker0网桥中，可以通过brctl show命令查看。</p>
<ul>
<li>从docker0子网中分配一个IP给容器使用，并设置docker0的IP地址为容器的默认网关。</li>
</ul>
</li>
<li><p><strong>每启动一个容器，就会多一对网络地址</strong></p>
</li>
<li><p><strong>所以docker容器之间都是可以互相ping通的！！！</strong></p>
</li>
</ul>
<p><strong>示意图：</strong></p>
<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200603/224057604.png" alt="mark"></p>
<p><strong>结论：</strong></p>
<ul>
<li>所有的容器不指定网络的情况下，都是由docker0路由的，docker会给每一个容器分配一个可用的Ip</li>
<li>Docker中的所有网络都是虚拟的，这样转发的效率高。</li>
<li>只要容器删除，对应的网桥就没了。</li>
</ul>
<h2 id="2-使用–-link"><a href="#2-使用–-link" class="headerlink" title="2. 使用– link"></a>2. 使用– link</h2><p>接下来有个思考问题？</p>
<ul>
<li>如果宕机（或者重启），容器ip发生了变化，那么可以使用名字来访问容器吗？</li>
</ul>
<p><code># 如: 通过--link就可以解决</code></p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">docker run -d -P --name 服务名1 --link 服务名2 要启动的服务</span><br><span class="line"></span><br><span class="line"><span class="comment"># 如: 通过--link就可以解决</span></span><br><span class="line">docker run -d -P --name tomcat01 --link tomcat02 tomcat</span><br><span class="line"></span><br><span class="line">注意：</span><br><span class="line">这样只能实现单向的联通</span><br></pre></td></tr></table></figure>



<ul>
<li><p><strong><code>-- link</code> : 本质上就是在etc/hosts 中增加了另一个服务的映射</strong> </p>
</li>
<li><p>但是<code>-- link</code> 已经不推荐使用(Docker0 不支持容器名访问)</p>
</li>
</ul>
<h2 id="3-自定义网络"><a href="#3-自定义网络" class="headerlink" title="3. 自定义网络"></a>3. 自定义网络</h2><h3 id="3-1-网络模式"><a href="#3-1-网络模式" class="headerlink" title="3.1 网络模式"></a>3.1 网络模式</h3><p><strong>安装Docker时，它会自动创建三个网络，bridge（创建容器默认连接到此网络）、 none 、host</strong></p>
<table>
<thead>
<tr>
<th>网络模式</th>
<th>简介</th>
</tr>
</thead>
<tbody><tr>
<td>Host</td>
<td>容器不会虚拟自己的网卡，配置自己的Ip地址，而是使用宿主机的ip和端口</td>
</tr>
<tr>
<td>Bridge</td>
<td>此模式会为了每一个容器分配，设置IP，并将容器连接到一个docker0的虚拟网桥，通过docker0网桥连接以及iptables nat表配置与宿主机的通信</td>
</tr>
<tr>
<td>none</td>
<td>该模式关闭了容器的网络功能</td>
</tr>
<tr>
<td>Container</td>
<td>创建的容器不会创建自己的网卡，配置自己的ip，而是和一个指定的容器共享ip，端口范围</td>
</tr>
<tr>
<td>自定义网络</td>
<td>略</td>
</tr>
</tbody></table>
<h3 id="3-2-默认网络"><a href="#3-2-默认网络" class="headerlink" title="3.2 默认网络"></a>3.2 默认网络</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">[root@server1 ~]<span class="comment"># docker network ls</span></span><br><span class="line">NETWORK ID          NAME                DRIVER              SCOPE</span><br><span class="line">0147b8d16c64        bridge              bridge              <span class="built_in">local</span></span><br><span class="line">2da931af3f0b        host                host                <span class="built_in">local</span></span><br><span class="line">63d31338bcd9        none                null                <span class="built_in">local</span></span><br></pre></td></tr></table></figure>

<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/144135446.png" alt="mark"></p>
<ul>
<li><p>Docker内置这三个网络，运行容器时，你可以使用该–network标志来指定容器应连接到哪些网络。</p>
</li>
<li><p>该bridge网络代表docker0 所有Docker安装中存在的网络。除非你使用该docker run –network=选项指定，否则Docker守护程序默认使用Bridge模式</p>
</li>
</ul>
<h3 id="3-3-自定义网络"><a href="#3-3-自定义网络" class="headerlink" title="3.3 自定义网络"></a>3.3 自定义网络</h3><ul>
<li><strong>建议使用自定义网桥来控制哪些容器之间可以相互通信，还可以自动DNS解析容器名称到ip地址</strong></li>
<li><strong>Docker提供了创建这些网络的默认网络驱动程序，你可以创建一个新的Bridge网络，Overlay或Macvlan网络</strong></li>
</ul>
<p>接下来介绍Dokcer的内置网络驱动程序。</p>
<ol>
<li><strong>Bridge</strong></li>
</ol>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">docker network create --driver bridge --subnet 192.168.0.0/16 --gateway 192.168.0.1 mynet</span><br></pre></td></tr></table></figure>

<ul>
<li>一个bridge网络是Docker中最常用的网络类型。</li>
<li>桥接网络类似于默认bridge网络，但添加一些新功能并删除一些旧的能力。</li>
</ul>
<p>创建成功后结果如下：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">root@Zhuuu:~<span class="comment"># docker network ls</span></span><br><span class="line">NETWORK ID          NAME                DRIVER              SCOPE</span><br><span class="line">38cf4307d18e        bridge              bridge              <span class="built_in">local</span></span><br><span class="line">227d5be3657a        host                host                <span class="built_in">local</span></span><br><span class="line">b1ae1f4f0884        mynet               bridge              <span class="built_in">local</span></span><br><span class="line">84aeff069277        none                null                <span class="built_in">local</span></span><br></pre></td></tr></table></figure>

<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line">root@Zhuuu:~<span class="comment"># docker network inspect mynet</span></span><br><span class="line">[</span><br><span class="line">    &#123;</span><br><span class="line">        <span class="string">"Name"</span>: <span class="string">"mynet"</span>,</span><br><span class="line">        <span class="string">"Id"</span>: <span class="string">"b1ae1f4f088456d79d05194b76b69a2ecc543249bc061f5dca8cccf88cf0dd18"</span>,</span><br><span class="line">        <span class="string">"Created"</span>: <span class="string">"2020-06-04T14:50:29.74809742+08:00"</span>,</span><br><span class="line">        <span class="string">"Scope"</span>: <span class="string">"local"</span>,</span><br><span class="line">        <span class="string">"Driver"</span>: <span class="string">"bridge"</span>,</span><br><span class="line">        <span class="string">"EnableIPv6"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"IPAM"</span>: &#123;</span><br><span class="line">            <span class="string">"Driver"</span>: <span class="string">"default"</span>,</span><br><span class="line">            <span class="string">"Options"</span>: &#123;&#125;,</span><br><span class="line">            <span class="string">"Config"</span>: [</span><br><span class="line">                &#123;</span><br><span class="line">                    <span class="string">"Subnet"</span>: <span class="string">"192.168.0.0/16"</span>,</span><br><span class="line">                    <span class="string">"Gateway"</span>: <span class="string">"192.168.0.1"</span></span><br><span class="line">                &#125;</span><br><span class="line">            ]</span><br><span class="line">        &#125;,</span><br><span class="line">        <span class="string">"Internal"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"Attachable"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"Ingress"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"ConfigFrom"</span>: &#123;</span><br><span class="line">            <span class="string">"Network"</span>: <span class="string">""</span></span><br><span class="line">        &#125;,</span><br><span class="line">        <span class="string">"ConfigOnly"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"Containers"</span>: &#123;&#125;,</span><br><span class="line">        <span class="string">"Options"</span>: &#123;&#125;,</span><br><span class="line">        <span class="string">"Labels"</span>: &#123;&#125;</span><br><span class="line">    &#125;</span><br><span class="line">]</span><br></pre></td></tr></table></figure>



<p>测试：创建两个tomcat容器并丢入我们自己创建的网络</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">root@Zhuuu:~<span class="comment"># docker run -d -P --name tomcat-net-01 --net mynet tomcat</span></span><br><span class="line">9e43abf5054091f38d76ccd85c1b7324f266920ef31576d33293faf3281c2b34</span><br><span class="line">root@Zhuuu:~<span class="comment"># docker run -d -P --name tomcat-net-02 --net mynet tomcat</span></span><br><span class="line">1ce722ed205dc443ec308665e0bffd5d9e2c148d65728c278b2f5e5aa13ac9b0</span><br></pre></td></tr></table></figure>

<p>再次查看：发现多出了两个容器在这个网络中</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br></pre></td><td class="code"><pre><span class="line">root@Zhuuu:~<span class="comment"># docker network inspect mynet</span></span><br><span class="line">[</span><br><span class="line">    &#123;</span><br><span class="line">        <span class="string">"Name"</span>: <span class="string">"mynet"</span>,</span><br><span class="line">        <span class="string">"Id"</span>: <span class="string">"b1ae1f4f088456d79d05194b76b69a2ecc543249bc061f5dca8cccf88cf0dd18"</span>,</span><br><span class="line">        <span class="string">"Created"</span>: <span class="string">"2020-06-04T14:50:29.74809742+08:00"</span>,</span><br><span class="line">        <span class="string">"Scope"</span>: <span class="string">"local"</span>,</span><br><span class="line">        <span class="string">"Driver"</span>: <span class="string">"bridge"</span>,</span><br><span class="line">        <span class="string">"EnableIPv6"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"IPAM"</span>: &#123;</span><br><span class="line">            <span class="string">"Driver"</span>: <span class="string">"default"</span>,</span><br><span class="line">            <span class="string">"Options"</span>: &#123;&#125;,</span><br><span class="line">            <span class="string">"Config"</span>: [</span><br><span class="line">                &#123;</span><br><span class="line">                    <span class="string">"Subnet"</span>: <span class="string">"192.168.0.0/16"</span>,</span><br><span class="line">                    <span class="string">"Gateway"</span>: <span class="string">"192.168.0.1"</span></span><br><span class="line">                &#125;</span><br><span class="line">            ]</span><br><span class="line">        &#125;,</span><br><span class="line">        <span class="string">"Internal"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"Attachable"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"Ingress"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"ConfigFrom"</span>: &#123;</span><br><span class="line">            <span class="string">"Network"</span>: <span class="string">""</span></span><br><span class="line">        &#125;,</span><br><span class="line">        <span class="string">"ConfigOnly"</span>: <span class="literal">false</span>,</span><br><span class="line">        <span class="string">"Containers"</span>: &#123;</span><br><span class="line">            <span class="string">"1ce722ed205dc443ec308665e0bffd5d9e2c148d65728c278b2f5e5aa13ac9b0"</span>: &#123;</span><br><span class="line">                <span class="string">"Name"</span>: <span class="string">"tomcat-net-02"</span>,</span><br><span class="line">                <span class="string">"EndpointID"</span>: <span class="string">"dc2f31d7e5955a2d43945b30b16f70bc017a7eb60fc5556c27ca76b579c96d6e"</span>,</span><br><span class="line">                <span class="string">"MacAddress"</span>: <span class="string">"02:42:c0:a8:00:03"</span>,</span><br><span class="line">                <span class="string">"IPv4Address"</span>: <span class="string">"192.168.0.3/16"</span>,</span><br><span class="line">                <span class="string">"IPv6Address"</span>: <span class="string">""</span></span><br><span class="line">            &#125;,</span><br><span class="line">            <span class="string">"9e43abf5054091f38d76ccd85c1b7324f266920ef31576d33293faf3281c2b34"</span>: &#123;</span><br><span class="line">                <span class="string">"Name"</span>: <span class="string">"tomcat-net-01"</span>,</span><br><span class="line">                <span class="string">"EndpointID"</span>: <span class="string">"b18174355605a296f99d10182219e41d746da84cab390d5682f3c870e598bc4d"</span>,</span><br><span class="line">                <span class="string">"MacAddress"</span>: <span class="string">"02:42:c0:a8:00:02"</span>,</span><br><span class="line">                <span class="string">"IPv4Address"</span>: <span class="string">"192.168.0.2/16"</span>,</span><br><span class="line">                <span class="string">"IPv6Address"</span>: <span class="string">""</span></span><br><span class="line">            &#125;</span><br><span class="line">        &#125;,</span><br><span class="line">        <span class="string">"Options"</span>: &#123;&#125;,</span><br><span class="line">        <span class="string">"Labels"</span>: &#123;&#125;</span><br><span class="line">    &#125;</span><br><span class="line">]</span><br></pre></td></tr></table></figure>



<ul>
<li>优点：<ul>
<li>不使用 – link 也可以让容器通过网桥互通</li>
<li>自定义的网络已经维护好了对应的关系</li>
<li>推荐使用自定义网络</li>
<li>不同集群之间网络是可以互相隔离的</li>
</ul>
</li>
</ul>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">root@Zhuuu:~<span class="comment"># docker exec -it tomcat-net-01 ping tomcat-net-02</span></span><br><span class="line">PING tomcat-net-02 (192.168.0.3) 56(84) bytes of data.</span><br><span class="line">64 bytes from tomcat-net-02.mynet (192.168.0.3): icmp_seq=1 ttl=64 time=0.125 ms</span><br><span class="line">64 bytes from tomcat-net-02.mynet (192.168.0.3): icmp_seq=2 ttl=64 time=0.093 ms</span><br><span class="line">^Z64 bytes from tomcat-net-02.mynet (192.168.0.3): icmp_seq=3 ttl=64 time=0.106 ms</span><br></pre></td></tr></table></figure>





<h3 id="3-4-自定义网络连通"><a href="#3-4-自定义网络连通" class="headerlink" title="3.4 自定义网络连通"></a>3.4 自定义网络连通</h3><p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/145925139.png" alt="mark"></p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"># 命令使用</span></span><br><span class="line">docker network connect  网卡 容器名</span><br></pre></td></tr></table></figure>



<p>测试</p>
<ol>
<li>在docker0上新建两个tomcat容器</li>
</ol>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">root@Zhuuu:~<span class="comment"># docker run -d -P --name tomcat01 tomcat</span></span><br><span class="line">root@Zhuuu:~<span class="comment"># docker run -d -P --name tomcat02 tomcat</span></span><br></pre></td></tr></table></figure>

<ol start="2">
<li>目前网络图</li>
</ol>
<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/150159939.png" alt="mark"></p>
<ol start="3">
<li>打通网络(tomcat02 加入到 mynet中)</li>
</ol>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">docker network connect  mynet tomcat02</span><br></pre></td></tr></table></figure>



<p><strong>结果：将tomcat02加入到了mynet网络中（一个容器，两个ip）</strong></p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">root@Zhuuu:~<span class="comment"># docker network connect mynet tomcat02</span></span><br><span class="line">root@Zhuuu:~<span class="comment"># docker exec -it tomcat02 ping tomcat-net-01</span></span><br><span class="line">PING tomcat-net-01 (192.168.0.2) 56(84) bytes of data.</span><br><span class="line">64 bytes from tomcat-net-01.mynet (192.168.0.2): icmp_seq=1 ttl=64 time=0.092 ms</span><br><span class="line">64 bytes from tomcat-net-01.mynet (192.168.0.2): icmp_seq=2 ttl=64 time=0.079 ms</span><br><span class="line">64 bytes from tomcat-net-01.mynet (192.168.0.2): icmp_seq=3 ttl=64 time=0.094 ms</span><br></pre></td></tr></table></figure>

<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/150723389.png" alt="mark"></p>
<h2 id="4-网络实战"><a href="#4-网络实战" class="headerlink" title="4. 网络实战"></a>4. 网络实战</h2><h3 id="4-1-部署redis集群"><a href="#4-1-部署redis集群" class="headerlink" title="4.1 部署redis集群"></a>4.1 部署redis集群</h3><ul>
<li>分片 + 高可用 + 负载均衡</li>
</ul>
<ol>
<li>创建集群网络环境</li>
</ol>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">docker network create redis --subnet 172.38.0.0/16</span><br></pre></td></tr></table></figure>

<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/154127625.png" alt="mark"></p>
<ol start="2">
<li>创建6个redis服务并修改配置文件</li>
</ol>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">for</span> port <span class="keyword">in</span> $(seq 1 6);\</span><br><span class="line"><span class="keyword">do</span> \</span><br><span class="line">mkdir -p /mydata/redis/node-<span class="variable">$&#123;port&#125;</span>/conf</span><br><span class="line">touch /mydata/redis/node-<span class="variable">$&#123;port&#125;</span>/conf/redis.conf</span><br><span class="line">cat &lt;&lt; EOF &gt;/mydata/redis/node-<span class="variable">$&#123;port&#125;</span>/conf/redis.conf</span><br><span class="line">port 6379</span><br><span class="line"><span class="built_in">bind</span> 0.0.0.0</span><br><span class="line">cluster-enabled yes</span><br><span class="line">cluster-config-file nodes.conf</span><br><span class="line">cluster-node-timeout 5000</span><br><span class="line">cluster-announce-ip 172.38.0.1<span class="variable">$&#123;port&#125;</span></span><br><span class="line">cluster-announce-port 6379</span><br><span class="line">cluster-announce-bus-port 16379</span><br><span class="line">appendonly yes</span><br><span class="line">EOF</span><br><span class="line"><span class="keyword">done</span></span><br></pre></td></tr></table></figure>



<ol start="3">
<li>启动6个服务</li>
</ol>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">docker run -p 637<span class="variable">$&#123;port&#125;</span>:6379 -p 1637<span class="variable">$&#123;port&#125;</span>:16379 --name redis-<span class="variable">$&#123;port&#125;</span> \</span><br><span class="line">-v /mydata/redis/node-<span class="variable">$&#123;port&#125;</span>/data:/data \</span><br><span class="line">-v /mydata/redis/node-<span class="variable">$&#123;port&#125;</span>/conf/redis.conf:/etc/redis/redis.conf \</span><br><span class="line">-d --net redis --ip 172.38.0.0<span class="variable">$&#123;port&#125;</span> redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf; \</span><br><span class="line"></span><br><span class="line"><span class="comment"># $&#123;port&#125;就代表自身的端口号</span></span><br></pre></td></tr></table></figure>



<ol start="4">
<li>进入redis配置集群</li>
</ol>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"># 进入redis配置集群</span></span><br><span class="line">docker <span class="built_in">exec</span> -it redis-1 /bin/sh</span><br><span class="line"></span><br><span class="line"><span class="comment"># 配置集群</span></span><br><span class="line">redis-cli --cluster create 172.38.0.11:6379 172.38.0.12:6379 172.38.0.13:6379 172.38.0.14:6379 172.38.0.15:6379 172.38.0.16:6379 --cluster-replicas 1</span><br></pre></td></tr></table></figure>



<h3 id="4-2-SpringBoot-微服务打包Docker镜像"><a href="#4-2-SpringBoot-微服务打包Docker镜像" class="headerlink" title="4.2 SpringBoot 微服务打包Docker镜像"></a>4.2 SpringBoot 微服务打包Docker镜像</h3><ol>
<li>构建SpringBoot 项目</li>
</ol>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@RestController</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">HelloController</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@RequestMapping</span>(<span class="string">"/hello"</span>)</span><br><span class="line">    <span class="function"><span class="keyword">public</span> String <span class="title">hello</span><span class="params">()</span></span>&#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="string">"hello,朱酱酱"</span>;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>





<ol start="2">
<li>打包应用</li>
</ol>
<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/164856776.png" alt="mark"></p>
<ol start="3">
<li>编写dockerfile</li>
</ol>
<ul>
<li>在idea中装一个插件</li>
</ul>
<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/165026808.png" alt="mark"></p>
<p>安装成功之后：</p>
<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/165114532.png" alt="mark"></p>
<ul>
<li>编写dockerfile</li>
</ul>
<figure class="highlight dockerfile"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">FROM</span> java:<span class="number">8</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">COPY</span><span class="bash"> *.jar /app.jar</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">CMD</span><span class="bash"> [<span class="string">"--server.port=8080"</span>]</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">EXPOSE</span> <span class="number">8080</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">ENTRYPOINT</span><span class="bash"> [<span class="string">"java"</span>,<span class="string">"-jar"</span>,<span class="string">"/app.jar"</span>]</span></span><br></pre></td></tr></table></figure>





<ol start="4">
<li>发布运行</li>
</ol>
<ul>
<li>只需要把生成的jar包和dockerfile放到服务器上即可</li>
</ul>
<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/165658531.png" alt="mark"></p>
<ul>
<li>服务端构建镜像</li>
</ul>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">docker build -t zhuuu666 .</span><br></pre></td></tr></table></figure>

<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/170105165.png" alt="mark"></p>
<ul>
<li>最后启动测试</li>
</ul>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">docker run -d -P --name testproject-web zhuuu666</span><br></pre></td></tr></table></figure>

<p><img src="http://zhuuu-bucket.oss-cn-beijing.aliyuncs.com/img/20200604/171154131.png" alt="mark"></p>
<p><strong>搞定收工！！！</strong></p>

      
      <!-- reward -->
      
      <div id="reward-btn">
        打赏
      </div>
      
    </div>
      <!-- copyright -->
      
        <div class="declare">
          <ul class="post-copyright">
            <li>
              <i class="ri-copyright-line"></i>
              <strong>版权声明： </strong s>
              本博客所有文章除特别声明外，均采用 <a href="https://www.apache.org/licenses/LICENSE-2.0.html" rel="external nofollow"
                target="_blank">Apache License 2.0</a> 许可协议。转载请注明出处！
            </li>
          </ul>
        </div>
        
    <footer class="article-footer">
      
          
<div class="share-btn">
      <span class="share-sns share-outer">
        <i class="ri-share-forward-line"></i>
        分享
      </span>
      <div class="share-wrap">
        <i class="arrow"></i>
        <div class="share-icons">
          
          <a class="weibo share-sns" href="javascript:;" data-type="weibo">
            <i class="ri-weibo-fill"></i>
          </a>
          <a class="weixin share-sns wxFab" href="javascript:;" data-type="weixin">
            <i class="ri-wechat-fill"></i>
          </a>
          <a class="qq share-sns" href="javascript:;" data-type="qq">
            <i class="ri-qq-fill"></i>
          </a>
          <a class="douban share-sns" href="javascript:;" data-type="douban">
            <i class="ri-douban-line"></i>
          </a>
          <!-- <a class="qzone share-sns" href="javascript:;" data-type="qzone">
            <i class="icon icon-qzone"></i>
          </a> -->
          
          <a class="facebook share-sns" href="javascript:;" data-type="facebook">
            <i class="ri-facebook-circle-fill"></i>
          </a>
          <a class="twitter share-sns" href="javascript:;" data-type="twitter">
            <i class="ri-twitter-fill"></i>
          </a>
          <a class="google share-sns" href="javascript:;" data-type="google">
            <i class="ri-google-fill"></i>
          </a>
        </div>
      </div>
</div>

<div class="wx-share-modal">
    <a class="modal-close" href="javascript:;"><i class="ri-close-circle-line"></i></a>
    <p>扫一扫，分享到微信</p>
    <div class="wx-qrcode">
      <img src="//api.qrserver.com/v1/create-qr-code/?size=150x150&data=http://zhuuu.work/2020/06/03/Docker/Docker-09-%E7%BD%91%E7%BB%9C%E5%8E%9F%E7%90%86/" alt="微信分享二维码">
    </div>
</div>

<div id="share-mask"></div>
      
      
  <ul class="article-tag-list" itemprop="keywords"><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/Docker/" rel="tag">Docker</a></li></ul>


    </footer>

  </div>

  
  
  <nav class="article-nav">
    
      <a href="/2020/06/04/Leetcode/Leetcode-238-%E9%99%A4%E8%87%AA%E8%BA%AB%E4%BB%A5%E5%A4%96%E6%95%B0%E7%BB%84%E7%9A%84%E4%B9%98%E7%A7%AF%20-%20%E5%89%AF%E6%9C%AC/" class="article-nav-link">
        <strong class="article-nav-caption">上一篇</strong>
        <div class="article-nav-title">
          
            Leetcode-238-除自身以外数组的乘积
          
        </div>
      </a>
    
    
      <a href="/2020/06/03/jdk_SourceCode/JDK1.8-12-PriorityQueue/" class="article-nav-link">
        <strong class="article-nav-caption">下一篇</strong>
        <div class="article-nav-title">JDK1.8源码-12-PriorityQueue</div>
      </a>
    
  </nav>


  

  
  
<!-- valine评论 -->
<div id="vcomments-box">
    <div id="vcomments">
    </div>
</div>
<script src="//cdn1.lncld.net/static/js/3.0.4/av-min.js"></script>
<script src='https://cdn.jsdelivr.net/npm/valine@1.3.10/dist/Valine.min.js'></script>
<script>
    new Valine({
        el: '#vcomments',
        notify: false,
        verify: '',
        app_id: '',
        app_key: '',
        path: window.location.pathname,
        avatar: 'mp',
        placeholder: '给我的文章加点评论吧~',
        recordIP: true
    });
    const infoEle = document.querySelector('#vcomments .info');
    if (infoEle && infoEle.childNodes && infoEle.childNodes.length > 0) {
        infoEle.childNodes.forEach(function (item) {
            item.parentNode.removeChild(item);
        });
    }
</script>
<style>
    #vcomments-box {
        padding: 5px 30px;
    }

    @media screen and (max-width: 800px) {
        #vcomments-box {
            padding: 5px 0px;
        }
    }

    #vcomments-box #vcomments {
        background-color: #fff;
    }

    .v .vlist .vcard .vh {
        padding-right: 20px;
    }

    .v .vlist .vcard {
        padding-left: 10px;
    }
</style>

  

  
  
<div class="gitalk" id="gitalk-container"></div>

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/gitalk@1.5.0/dist/gitalk.css">


<script src="https://cdn.jsdelivr.net/npm/gitalk@1.5.0/dist/gitalk.min.js"></script>


<script src="https://cdn.jsdelivr.net/npm/blueimp-md5@2.10.0/js/md5.min.js"></script>

<script type="text/javascript">
  var gitalk = new Gitalk({
    clientID: 'db188ed8c86dc4b0dbf3',
    clientSecret: 'a58f92160e5a9efd726b7d533000a0737f3e3f3e',
    repo: 'Blog-comments',
    owner: 'Zhuuuuuuuu',
    admin: ['Zhuuuuuuuu'],
    // id: location.pathname,      // Ensure uniqueness and length less than 50
    id: md5(location.pathname),
    distractionFreeMode: false,  // Facebook-like distraction free mode
    pagerDirection: 'last'
  })

  gitalk.render('gitalk-container')
</script>

  

</article>
</section>
      <footer class="footer">
  <div class="outer">
    <ul class="list-inline">
      <li>
        &copy;
        2019-2021
        Zhuuu
      </li>
      <li>
        
      </li>
    </ul>
    <ul class="list-inline">
      <li>
        
        
        <span>
  <i>PV:<span id="busuanzi_value_page_pv"></span></i>
  <i>UV:<span id="busuanzi_value_site_uv"></span></i>
</span>
        
      </li>
      <li>
        <!-- cnzz统计 -->
        
        <script type="text/javascript" src='https://s9.cnzz.com/z_stat.php?id=1278069914&amp;web_id=1278069914'></script>
        
      </li>
    </ul>
  </div>
</footer>
    <div class="to_top">
        <div class="totop" id="totop">
  <i class="ri-arrow-up-line"></i>
</div>
      </div>
    </main>
      <aside class="sidebar">
        <button class="navbar-toggle"></button>
<nav class="navbar">
  
  <div class="logo">
    <a href="/"><img src="/images/ayer-side.svg" alt="朱酱酱的学习博客"></a>
  </div>
  
  <ul class="nav nav-main">
    
    <li class="nav-item">
      <a class="nav-item-link" href="/">主页</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags">标签</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/JVM/">JVM</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/JDK%E6%BA%90%E7%A0%81%E5%88%86%E6%9E%90/">JDK源码</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/%E5%A4%9A%E7%BA%BF%E7%A8%8B/">多线程</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/Mysql/">Mysql</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/Redis/">Redis</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/%E8%AE%BE%E8%AE%A1%E8%80%85%E6%A8%A1%E5%BC%8F/">设计模式</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/MyBatis/">MyBatis</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/SpringMVC/">SpringMVC</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/Spring/">Spring</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/SpringBoot/">SpringBoot</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F/">Linux</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/Leetcode/">Leetcode</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/%E5%89%8D%E7%AB%AF/">前端</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/%E7%BD%91%E7%BB%9C%E7%BC%96%E7%A8%8B/">网络编程</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/tags/photoshop/">photoshop</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="http://smartzhuuu.lofter.com/" target="_blank" rel="noopener">摄影</a>
    </li>
    
    <li class="nav-item">
      <a class="nav-item-link" href="/2020/about">关于我</a>
    </li>
    
  </ul>
</nav>
<nav class="navbar navbar-bottom">
  <ul class="nav">
    <li class="nav-item">
      
      <a class="nav-item-link nav-item-search"  title="Search">
        <i class="ri-search-line"></i>
      </a>
      
      
      <a class="nav-item-link" target="_blank" href="/atom.xml" title="RSS Feed">
        <i class="ri-rss-line"></i>
      </a>
      
    </li>
  </ul>
</nav>
<div class="search-form-wrap">
  <div class="local-search local-search-plugin">
  <input type="search" id="local-search-input" class="local-search-input" placeholder="Search...">
  <div id="local-search-result" class="local-search-result"></div>
</div>
</div>
      </aside>
      <div id="mask"></div>

<!-- #reward -->
<div id="reward">
  <span class="close"><i class="ri-close-line"></i></span>
  <p class="reward-p"><i class="ri-cup-line"></i>请我喝杯咖啡吧~</p>
  <div class="reward-box">
    
    <div class="reward-item">
      <img class="reward-img" src="/images/alipay.jpg">
      <span class="reward-type">支付宝</span>
    </div>
    
    
    <div class="reward-item">
      <img class="reward-img" src="/images/wechat.jpg">
      <span class="reward-type">微信</span>
    </div>
    
  </div>
</div>
      
<script src="/js/jquery-2.0.3.min.js"></script>


<script src="/js/jquery.justifiedGallery.min.js"></script>


<script src="/js/lazyload.min.js"></script>


<script src="/js/busuanzi-2.3.pure.min.js"></script>


<script src="/js/share.js"></script>



<script src="/fancybox/jquery.fancybox.min.js"></script>




<script>
  try {
    var typed = new Typed("#subtitle", {
    strings: ['昨夜西风凋碧树。独上高楼，望尽天涯路','衣带渐宽终不悔，为伊消得人憔悴。','众里寻他千百度。蓦然回首，那人却在，灯火阑珊处。'],
    startDelay: 0,
    typeSpeed: 200,
    loop: true,
    backSpeed: 100,
    showCursor: true
    });
  } catch (err) {
  }
  
</script>




<script src="/js/tocbot.min.js"></script>

<script>
  // Tocbot_v4.7.0  http://tscanlin.github.io/tocbot/
  tocbot.init({
    tocSelector: '.tocbot',
    contentSelector: '.article-entry',
    headingSelector: 'h1, h2, h3, h4, h5, h6',
    hasInnerContainers: true,
    scrollSmooth: true,
    scrollContainer:'main',
    positionFixedSelector: '.tocbot',
    positionFixedClass: 'is-position-fixed',
    fixedSidebarOffset: 'auto',
    onClick: (e) => {
      $('.toc-link').removeClass('is-active-link');
      $(`a[href=${e.target.hash}]`).addClass('is-active-link');
      $(e.target.hash).scrollIntoView();
      return false;
    }
  });
</script>


<script>
  var ayerConfig = {
    mathjax: true
  }
</script>


<script src="/js/ayer.js"></script>


<script src="https://cdn.jsdelivr.net/npm/jquery-modal@0.9.2/jquery.modal.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/jquery-modal@0.9.2/jquery.modal.min.css">


<!-- Root element of PhotoSwipe. Must have class pswp. -->
<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">

    <!-- Background of PhotoSwipe. 
         It's a separate element as animating opacity is faster than rgba(). -->
    <div class="pswp__bg"></div>

    <!-- Slides wrapper with overflow:hidden. -->
    <div class="pswp__scroll-wrap">

        <!-- Container that holds slides. 
            PhotoSwipe keeps only 3 of them in the DOM to save memory.
            Don't modify these 3 pswp__item elements, data is added later on. -->
        <div class="pswp__container">
            <div class="pswp__item"></div>
            <div class="pswp__item"></div>
            <div class="pswp__item"></div>
        </div>

        <!-- Default (PhotoSwipeUI_Default) interface on top of sliding area. Can be changed. -->
        <div class="pswp__ui pswp__ui--hidden">

            <div class="pswp__top-bar">

                <!--  Controls are self-explanatory. Order can be changed. -->

                <div class="pswp__counter"></div>

                <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>

                <button class="pswp__button pswp__button--share" style="display:none" title="Share"></button>

                <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>

                <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>

                <!-- Preloader demo http://codepen.io/dimsemenov/pen/yyBWoR -->
                <!-- element will get class pswp__preloader--active when preloader is running -->
                <div class="pswp__preloader">
                    <div class="pswp__preloader__icn">
                        <div class="pswp__preloader__cut">
                            <div class="pswp__preloader__donut"></div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
                <div class="pswp__share-tooltip"></div>
            </div>

            <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
            </button>

            <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
            </button>

            <div class="pswp__caption">
                <div class="pswp__caption__center"></div>
            </div>

        </div>

    </div>

</div>

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/default-skin/default-skin.css">
<script src="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/photoswipe@4.1.3/dist/photoswipe-ui-default.min.js"></script>

<script>
    function viewer_init() {
        let pswpElement = document.querySelectorAll('.pswp')[0];
        let $imgArr = document.querySelectorAll(('.article-entry img:not(.reward-img)'))

        $imgArr.forEach(($em, i) => {
            $em.onclick = () => {
                // slider展开状态
                // todo: 这样不好，后面改成状态
                if (document.querySelector('.left-col.show')) return
                let items = []
                $imgArr.forEach(($em2, i2) => {
                    let img = $em2.getAttribute('data-idx', i2)
                    let src = $em2.getAttribute('data-target') || $em2.getAttribute('src')
                    let title = $em2.getAttribute('alt')
                    // 获得原图尺寸
                    const image = new Image()
                    image.src = src
                    items.push({
                        src: src,
                        w: image.width || $em2.width,
                        h: image.height || $em2.height,
                        title: title
                    })
                })
                var gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, {
                    index: parseInt(i)
                });
                gallery.init()
            }
        })
    }
    viewer_init()
</script>



<script type="text/x-mathjax-config">
  MathJax.Hub.Config({
      tex2jax: {
          inlineMath: [ ['$','$'], ["\\(","\\)"]  ],
          processEscapes: true,
          skipTags: ['script', 'noscript', 'style', 'textarea', 'pre', 'code']
      }
  });

  MathJax.Hub.Queue(function() {
      var all = MathJax.Hub.getAllJax(), i;
      for(i=0; i < all.length; i += 1) {
          all[i].SourceElement().parentNode.className += ' has-jax';
      }
  });
</script>

<script src="https://cdn.jsdelivr.net/npm/mathjax@2.7.6/unpacked/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>


<script type="text/javascript" src="https://js.users.51.la/20544303.js"></script>
  </div>
</body>

</html>